- 搜標題
- 搜題干
- 搜選項
單項選擇題
屏蔽門縱向組合總長度約（）。
A.113.80m
B.110.80m
C.114.80m
D.112.80m
A.113.80m
B.110.80m
C.114.80m
D.112.80m
